"We acquire and monitor Power Quality according to binding standards."
Dries Boone, General Manager, iba Benelux BVBA
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Power Quality – Safety and Quality in Energy Grids
Power quality: The burden of proof is on energy producers
Distributed energy generation and the associated fluctuating provision of electrical power from renewable sources influences the stability of the power grid. Energy suppliers have to assure at all times that the energy fed into the public grid meets the quality criteria of the European standard EN 50160. This not only affects the "big" energy producers, but also companies operating their own power plants that feed energy into the public grid.
High power quality requires optimized facilities
Grid operators, too, have to comply with EN 50160. The requirements for transmission grids increase with the distributed structure and the use of power electronics, e.g. to control power flows or operating HVDC facilities where direct current is transmitted over very long distances.
In this context, not only monitoring of electrical power is important, but also monitoring of the controllers of electrical equipment such as converters in converter stations. The modular ibaPQU-S system enables data from the facility to be recorded together with the calculated quality characteristics and measured raw values centrally in ibaPDA. This enables users to thoroughly evaluate all data, recognize contexts and thereby determine the causes of faults or quality variations.
Moreover, the data provide important information about the dimensioning of the facility and its optimal operation.
Consumers are obliged to power quality
Electricity consumers influence the grid quality for example by power electronics devices, e.g. for frequency-regulated drives. Grid reactances and the harmonic factor of the currents create repercussions in the grid that impair the power quality in the supply grid.
Examples include high surge-like loads caused by starting and running of large machines such as the main drives of rolling mills or arc furnaces. Both energy producers and large-scale consumers must observe the "D-A-CH-CZ Technical rules for the assessment of power system perturbations" that specify limit values for the emission of "power system faults" for generating and consumer facilities.
The ibaPQU-S system is also capable of determining the characteristics required in this body rules and of monitoring compliance with the limit values. Moreover, power suppliers contractually agree with each large consumer the extent of disturbances they are allowed to inject into the grid.
A violation of the limit values can be punished with fines. Monitoring the electric power quality at the transfer point provides information about whether and what disturbances are fed into the grid.
Possible Applications for Power Quality by iba
The iba system provides a wide range of functions to monitor and optimize electrical power facilities
of the power quality in energy grids
Digital fault recorder
(transient fault recorder)
of the protocol standard IEC 61850
Example configuration for Power Quality
Proving electric power quality in line with standards
Electrical power quality (EPQ) is defined by characteristics such as frequency, magnitude, curve shape and symmetry of the phase voltages. It is adversely affected to an ever greater extent by the power grid itself, which is increasingly being fed from distributed sources, but also by the consumers. The modular ibaPQU-S system allows the quality in energy grids to be monitored continuously. ibaPQU measures raw values such as current and voltage in sync with the grid and internally calculates the characteristics relevant for power quality according to the standard IEC 61000-4-30 Class A and is hence suitable for evaluations according to EN 50160. Analysis of the characteristics values, especially when combined with other plant and process data, is a major basis for improving the quality and availability of power grids.
High-speed acquisition of dynamic processes
The scalable iba system allows tailoring the fault recorder function to the needs of customers in a flexible and individual way. Fast transient signal changes can be detected in the range between 1 kHz and 100 kHz using suitable acquisition hardware and recorded in high resolution.
Since the fault recorder only records the measured data when a fault occurs, ibaPDA first buffers the data internally. When a fault condition occurs, recording of the data is triggered.
When several thousand signals have to be measured synchronously with a high sampling rate in complex facilities, multiple ibaPDA systems are interconnected using optical fiber and the data are recorded with sample precision (multistation functionality).
Standard for energy automation
The transmission protocol IEC61850 has become the protocol standard for protection and control of electrical medium and high-voltage switchgear. IEC61850 further increases the application spectrum of ibaPDA.
Products for Power Quality
Power Quality Unit ibaPQU-S
The Power Quality Unit ibaPQU-S can be used for high-accuracy monitoring of the power quality in energy grids. For this purpose, characteristics of electric power quality are calculated according to the standard and are acquired and recorded by ibaPDA.
As central part of the iba system, ibaPDA has been proving itself as one of the most versatile data acquisition systems for maintenance and production for years. Client-server architecture, flexible recording, simple configuration owing to auto-detect are just some of the convincing features.
ibaPDA supports IEC 61850
The standard IEC 61850 (Edition 2) describes a transmission protocol for control and protection technology in electrical medium- and high-voltage switchgear. The ibaPDA interface IEC61850 allows integrating IEC-61850 compatible protection devices into the iba system.
Please contact your local sales partner
|10.150000||ibaPQU-S||Power Quality Unit|
|10.124600||ibaMS3xAI-1A||Input module with 3 analog current inputs ± 3.0 A|
|10.124610||ibaMS3xAI-1A||Input module with 3 analog current inputs ± 15.0 A|
|10.124620||ibaMS3xAI-1A/100A||Input module with 3 analog current inputs ± 6.25 A (± 100 A for 1 s)|
|10.124521||ibaMS4xAI-380VAC||Input module with 4 analog voltage inputs, 380 V AC|
|10.124500||ibaMS8xAI-110VAC||Input module with 8 analog voltage inputs, 110 V AC|
|10.124100||ibaMS16xAI-10V||Input module with 16 analog voltage inputs ± 10 V|
|10.124101||ibaMS16xAI-10V-HI||Input module with 16 analog voltage inputs ± 10 V, high impedance|
|10.124102||ibaMS16xAI-24V||Input module with 16 analog voltage inputs ± 24 V|
|10.124103||ibaMS16xAI-24V-HI||Input module with 16 analog voltage inputs ± 24 V, high impedance|
|10.124110||ibaMS16xAI-20mA||Input module with 16 analog voltage inputs ± 20 V|
|10.124200||ibaMS16xDI-220V*||Input module with 16 digital inputs ± 220 V|
|10.124201||ibaMS16xDI-24V*||Input module with 16 digital inputs ± 24 V|
|10.124210||ibaMS32xDI-24V*||Input module with 32 digital inputs ± 24 V|
|10.124000||ibaPADU-B4S||Subrack for a central unit and 4 modules|
|30.600640||ibaPDA-V6-64||Basic package server/client bundle for 64 signals|
|30.602560||ibaPDA-V6-256||Basic package server/client bundle for 256 signals|
|30.610240||ibaPDA-V6-1024||Basic package server/client bundle for 1024 signals|
|30.620480||ibaPDA-V6-2048||Basic package server/client bundle for 2048 signals|
|30.666660||ibaPDA-V6-unlimited||Basic package server/client bundle for an unlimited number of signals|
|30.001930||ibaPDA Multistation License||Expanded license for multistation operation|
|31.001090||ibaPDA-Interface-IEC61850-Client||IEC61850 communication interface|
|30.700064||ibaHD-Server-T-64||Basic license HD server function for 64 tags (signals)|
|30.700256||ibaHD-Server-T-256||Basic license HD server function for 256 tags (signals)|
|30.701024||ibaHD-Server-T-1024||Basic license HD server function for 1024 tags (signals)|
|30.702048||ibaHD-Server-T-2048||Basic license HD server function for 2048 tags (signals)|
|30.706666||ibaHD-Server-T-unlimited||Basic license HD server function for unlimited tags (signals)|
Additionally, license expansions are available for ibaPDA and ibaHD server to increase the number of signals, clients and data stores.